_GENERAL DOCUMENTS - C1981017 (258)

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PROJECT WORK DESCRIPTION The purpose of this Project is to apply various plant materials and other products to the steep slopes that exist below the mine entry benches. Establishment of plant materials and construction and placement of other products will help to inhibit slope erosion and sediment contribution to Coal and Dutch Creeks. The slopes to be treated exist at or near the angle of repose at an elevation approaching 10,000 feet. They are generally composed of sand to cobble sized material derived from sandstones and shales that have been down-cast as a result of the construction of the overlying mine entry benches. The slopes are steep, remote and difficult to access and to work on. Typically, the Project will progress in the following manner. Each slope will be hand scarified in order to disrupt the soil crust and to promote the potential for seed to rest in small niches on the slopes. Brush layering may occur at one slope area. Straw wattles will be placed in selected locations at the crest of the slopes, and periodically on the slopes and at the toe of the slopes. Bands of trees and shrubs will be planted on the slopes and at the base of some slopes. Fertilizer, seed, mulch and a tackifier will be applied to each slope. Finally, pre-vegetated wattle logs may be installed at one slope area. Following completion of the slope revegetation process, access ways to the sites will be scarified and reseeded. The estimated acreage of each Mine Bench Outslope is tabulated below. Mine Bench Estimated Outslope Outsiope Name Accessed Via Roads Acreage Mine 1 West B, D 7.7 Mine 1 East B, D 2.2 Mine 3 South E, F 3.5 Mine 5 South E, G 2.4 Total, Estimate 15.8 Work Tasks The tasks included in the project are as follows: Task 1: Mobilization and Demobilization Task 2: Project Safety Plan Task 3: Slope Scarification Task 4: Tree Planting Task 5: Shrub Planting Task 6: Revegetation Task 7: Hand Labor 6